Compare Tums vs. Pepto-Bismol

Head-to-head comparisons of medication uses, side effects, ratings, and more.

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Relieves heartburn.

Tums (Calcium carbonate) gives quick relief for heartburn, but does not last all day. Talk to your doctor or pharmacist about other medicines if you need additional relief.

3.8/ 5 average rating with 1373 reviewsforTums
Relieves heartburn, upset stomach, and diarrhea.

Pepto-Bismol (bismuth subsalicylate) can help for many stomach and intestinal problems, but may take longer to work compared to some other anti-diarrheal medicines.

3.9/ 5 average rating with 1376 reviewsforPepto-Bismol
Upsides
  • Tums (Calcium carbonate) is an effective, first-line medication for hearburn.
  • Tums (Calcium carbonate) starts working in seconds.
  • Has minimal side effects.
  • Available in chewable form.
  • Is inexpensive and readily available over-the-counter.
  • Coupons are available – speak to your doctor or pharmacist.
  • Pepto-Bismol (bismuth subsalicylate) works well to alleviate stomach and intestinal problems and doesn't have many side effects.
  • Comes in easy to take chewable pills or liquid, if you do not like swallowing pills.
  • Is inexpensive and available over the counter.
  • Coupons are available. Speak to your doctor or pharmacist.
Downsides
  • Because Tums (Calcium carbonate) only lasts for 1 to 2 hours, you may need additional doses.
  • May increase calcium levels too much in people with kidney or thyroid conditions.
  • May have a chalky taste.
  • May not be as strong as other anti-diarrheal or antacid medications.
  • Should not be used for more than 2 days if your diarrhea does not go away or if you have a fever.
  • For symptoms other than diarrhea, should not be used for more than 7 days without your doctor's approval. Speak to your doctor if symptoms persist.
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Used for
Dosage forms
  • Chewable tablet
  • Liquid
  • Chewable tablet
  • Liquid
  • Pill
Price
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Reviews
1373 reviews so far
82%
saidit'sworth it
43%
saiditworked well
5%
saidit'sa big hassle

Have you used Tums (Calcium carbonate)?

Leave a review
1376 reviews so far
84%
saidit'sworth it
48%
saiditworked well
6%
saidit'sa big hassle

Have you used Pepto-Bismol (bismuth subsalicylate)?

Leave a review
Side effects
The Tums (Calcium carbonate) FDA package insert doesn’t have numbers about how common side effects are.
The Pepto-Bismol (bismuth subsalicylate) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
No information currently available
  • Reye's syndrome
    • Children or teenagers that have or are recovering from flu/flu-like symptoms or chickenpox
  • Allergy to salicylates
    • Aspirin allergy
    • NSAID allergy
  • Hearing problems
    • Age 60 or older
  • Drug Interactions
    • Anticoagulants
    • Aspirin-containing medications
See more detailed risks and warnings